import axios from 'axios';
import {MessageBox, Message} from 'element-ui';
import store from '@/store';
import {getToken} from '@/utils/auth';

// create an axios instance
const service = axios.create({
  baseURL: '/api', // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 600 * 1000 // request timeout
});

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent
    const token = getToken();
    if (token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers['authorization'] = token;
    }
    return config;
  },
  error => {
    // do something with request error
    console.log(error); // for debug
    return Promise.reject(error);
  }
);

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data;
    if (res.type == 'application/octet-stream') {
      return response;
    }
    // if the custom code is not 200, it is judged as an error.
    if (res.code !== 200) {
      Message({
        message: res.msg || 'Error',
        type: 'error',
        duration: 5 * 1000
      });

      // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
      if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
        // to re-login
        MessageBox.confirm(
          'You have been logged out, you can cancel to stay on this page, or log in again',
          'Confirm logout',
          {
            confirmButtonText: 'Re-Login',
            cancelButtonText: 'Cancel',
            type: 'warning'
          }
        ).then(() => {
          store.dispatch('user/resetToken').then(() => {
            location.reload();
          });
        });
      }
      // const err = new Error(res.msg || 'Error');
      return Promise.reject(res.msg  || '未知错误');
    } else {
      return response;
    }
  },
  error => {
    console.log(error); // for debug
    Message({
      message: error.response.data.error,
      type: 'error',
      duration: 5 * 1000
    });
    return Promise.reject(error);
  }
);

export default service;
